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AB Industrietechnik srl – Via Julius Durst, 70 – 39042 BRESSANONE (BZ) Italy – Tel: +39 0472/830626 – [email protected] – www.industrietechnik.it
Control of speed based on CO
2
(
009
=1):
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2
(
167
: setpoint
168
: proportional band and
169
: integral
time).
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CO2
167
OFF
Fan 1
on/off speed
CO2
167
168
0
Modulating
fan
ON
CO2
167
168
OFF
Fan 2
on/off speed
FAN1
FAN2
CO2
167
168
OFF
Fan 3
on/off speed
FAN1
FAN3
FAN2
FAN1
FAN3
167
DLUH[FKDQJHVHWSRLQW
168
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9(/VSHHG >
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154
[
151
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)
] +
150
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154
[
153
-
152
@
152
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9(/VSHHG >
155
[
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-
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@
150
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155
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@
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IRUWKHH[WUDFWLRQ
)RUWKHWZRVSHHGIDQ
if CO
2
<=
167,
speed 1 is ON, and if CO
2
LQFUHDVHVZKHQ&2
2
> (
167
+
168
), speed 2 is ON,
if CO
2
decreases and CO
2
<= (
167
+
168
/2), speed 1 is ON,
)RUWKHWKUHHVSHHGIDQ
if CO
2
<=
167,
speed 1 is ON,
if CO
2
increases and CO
2
>= (
167
+ (
168
*(2/3))) and CO
2
< (
167
+
168
), speed 2 is ON,
if CO
2
> (
167
+
168
), speed 3 is ON,
if CO
2
decreases and CO
2
<= (
167
+ (
168
*(2/3))) and CO
2
> (
167
+ (
168
*(1/3))), speed 2 is ON,